Restor Dent Endod.  2020 Feb;45(1):e5. 10.5395/rde.2020.45.e5.

A micro-computed tomography evaluation of voids using calcium silicate-based materials in teeth with simulated internal root resorption

• Tek V
• Türker SA

• KMID: 2470340
• DOI: http://doi.org/10.5395/rde.2020.45.e5

Abstract

OBJECTIVES
The obturation quality of MTA, Biodentine, Total Fill BC root canal sealer (RCS), and warm gutta-percha (WGP) in teeth with simulated internal root resorption (IRR) was evaluated by using micro-computed tomography.
MATERIALS AND METHODS
Standardized IRR cavities were created using 40 extracted maxillary central incisor teeth and randomly assigned into 4 groups (n = 10). IRR cavities were filled with MTA, Biodentine, Total Fill BC RCS (bulk-fill form) and WGP + Total Fill BC RCS. Percentage of voids between resorptive cavity walls and obturation material (external void), and inside the filling materials (internal voids) were measured.
RESULTS
Total Fill BC sealer in the bulk-fill form presented significantly highest values of external and internal void percentages (p < 0.05). Biodentine showed a significantly lowest external void percentage (p < 0.05). WGP + Total Fill BC RCS presented significantly lower values of internal void percentages than all groups (p < 0.05), except Biodentine (p > 0.05).
CONCLUSION
None of the filling materials were created void-free obturation in resorption cavities. Biodentine may favor its application in teeth with IRR over Angelus MTA and bulk-fill form of Total Fill BC.

Keyword

Biodentine; Calcium silicate; Internal root resorption; Micro-computed tomography; MTA cement

MeSH Terms

Calcium*
Dental Pulp Cavity
Gutta-Percha
Incisor
Pemetrexed
Root Resorption*
Tooth*
Calcium
Gutta-Percha
Pemetrexed

Figure

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  Figure 1. Experimental design. (A) Semi-circular cavities were created on each half of the roots; (B) Individual molds in Eppendorf tubes; (C) Periapical radiography; (D) Micro-computed tomography (µCT) images for obturation of resorption cavity.

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  Figure 2. Micro-computed tomography (µCT) analysis stages. (A) Measurement of percentage voids on CTAn software (Bruker microCT); (B). Selection of the region of interest; (C) Threshold selection from gray-level histogram.

Reference

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